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2. Heating seasonal performance factor - Wikipedia

   en.wikipedia.org/wiki/Heating_seasonal...

   A well designed ground source heat pump installation should achieve an SPF of 3.5, or over 5 if linked to a solar-assisted thermal bank. [6] Example: For a heat pump delivering 120,000,000 BTU during the season, when consuming 15,000 kWh, the HSPF can be calculated as : HSPF = 120000000 (BTU) / (1000) / 15000 (kWh) HSPF = 8

3. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   An international milestone is the heat pump built by Escher Wyss in 1937/38 to replace the wood stoves in the City Hall of Zurich. To avoid noise and vibrations, a recently developed rotary piston compressor was used. This historic heat pump heated the town hall for 63 years until 2001. Only then was it replaced by a new, more efficient heat ...

4. Ground source heat pump - Wikipedia

   en.wikipedia.org/wiki/Ground_source_heat_pump

   A heat pump in combination with heat and cold storage. A ground source heat pump (also geothermal heat pump) is a heating/cooling system for buildings that use a type of heat pump to transfer heat to or from the ground, taking advantage of the relative constancy of temperatures of the earth through the seasons.

5. Pump It Up! The Best Car Jacks for 2024, Tested - AOL

   www.aol.com/pump-best-car-jacks-2023-160900757.html

   The car jack may not be the most exciting of gadgets, but it is one of the most important. ... we were amazed by this 87-pound beast's lift-per-pump, with a mere 1.5 pumps of the arm raising the ...

6. Jack (device) - Wikipedia

   en.wikipedia.org/wiki/Jack_(device)

   A 2.5-ton house jack that stands 24 inches from top to bottom fully threaded out. A house jack, also called a screw jack, is a mechanical device primarily used to lift buildings from their foundations for repairs or relocation. A series of jacks is used and then wood cribbing temporarily supports the structure. This process is repeated until ...

7. Jennifer Hudson Says Her 15-Year-Old Son Helped Create Her ...

   www.aol.com/jennifer-hudson-says-her-15...

   Jennifer Hudson recently enlisted the help of two loved ones.. The daytime talk show host, 43, exclusively tells PEOPLE how her 15-year-old son David Daniel Otunga Jr. and her boyfriend Common ...